CN205538273U - A indoor test device for simulating deep tunnel excavation - Google Patents
A indoor test device for simulating deep tunnel excavation Download PDFInfo
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- CN205538273U CN205538273U CN201620351836.0U CN201620351836U CN205538273U CN 205538273 U CN205538273 U CN 205538273U CN 201620351836 U CN201620351836 U CN 201620351836U CN 205538273 U CN205538273 U CN 205538273U
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- excavation
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Abstract
The utility model discloses an indoor test device for simulating deep tunnel excavation. Its outer frame includes left loading board, right loading board, carrying bottom plate, spread groove steel cap between left loading board and the right loading board top, the internal frame is including linking firmly left branch baffle and the right branch baffle on carrying bottom plate, and preceding, the rear end of left branch baffle and right branch baffle are connected with the toughened glass board that excels in, are equipped with load plate between the upper portion of left branch baffle and right branch baffle, are equipped with a plurality of vertical loading hydro -cylinders between load plate and channel bar, put test material in the internal frame cavity, test material central authorities have preset tunnel excavation unit, tunnel excavation unit passes through the goat's horn grapple and is connected with axial excavation hydro -cylinder, axial excavation hydro -cylinder is installed on hydro -cylinder fixed steel frame, axial excavation hydro -cylinder and vertical loading hydro -cylinder pass through the hydraulic pressure pipe and link to each other with the hydraulic power source. The utility model discloses the automatic excavation in deep tunnel of simulating different sectional forms, size, easy operation, observation is convenient, test efficiency is high.
Description
Technical field
This utility model belongs to Deep Mine roadway engineering country rock excavation and support field, is specifically related to a kind of laboratory testing rig for simulating deep tunnel excavation.
Background technology
In recent years, along with gradually reducing of China's superficial part mineral resources, the mining depth of mine is constantly increasing, the domestic Deep Mine occurring in that large quantities of km level, it is contemplated that China will have more mine to enter deep or super deep mining.Along with adopting deep increase, mine laneway country rock is composed the engineering geological condition deposited also more for complexity, roadway excavation and the large deformation of viability, collapse emit, bump, the problem such as rock burst the most prominent, the normal safe of mine is created huge threat.Therefore, research Deep Mine roadway surrounding rock deformation, destruction and stability when excavation and after excavation has important practical significance and theory significance.
Due to complexity, the polytropy of deep mining engineering geological condition, thus, use indoor physical simulation test to remain one of Main Means studying the deformation of deep laneway surrounding rock, failure evolvement mechanism, stability etc. at present.But, for large-scale deep tunnel, existing physical model test device suffers from the drawback that with not enough: one is that the on-load pressure that assay device provides is less than normal, and model stress is 2-way state, it is impossible to the mechanical environment of simulation deep high stress tunnel；Two is that roadway excavation need to use special excavation drilling system so that whole model assay systems is increasingly complex；Three is that disturbing influence is big, uses small-sized shovel, small-sized spade manually to dig and digs or utilize special roadway excavation system driving all country rock may be produced excessive disturbing influence；Four is under triaxiality environment, and the deformation on test model surface, misalignment etc. cannot intuitively be observed, and are unfavorable for experimental phenomena analysis and Test Data Collecting.
Summary of the invention
The purpose of this utility model is the above technical problem existed for the most conventional Roadway model pilot system, offer one is simple to operate, it is convenient to observe, test efficiency is high, it is possible to the laboratory testing rig that simulation different section shape, the deep tunnel of size excavate.
The purpose of this utility model realizes by the following technical solutions: this laboratory testing rig being used for simulating deep tunnel excavation, and it includes outside framework and the set inner frame in the inner of groove type；Described outside framework includes the left loading plate erect, right loading plate and the horizontal bearing base plate that bottom is connected therewith, and between left loading plate top and right loading plate top, level connection joint has some horizontal channel bars；Described inner frame includes that baffle plate and right baffle plate are propped up in the left side being fixed on weight tray, erectting, the front and back ends of left baffle plate and right baffle plate connects high-strength armorplate glass, the load plate of level it is provided with between left baffle plate and the top of right baffle plate, load plate level height, less than the height of channel bar, is uniformly provided with some Plumb load oil cylinders between load plate and channel bar；The built-in test material that is placed with of described inner frame cavity, test material central authorities are preset with for the roadway excavation unit that simulate tunnel, some head and the tail connect；Roadway excavation unit near high-strength armorplate glass side is connected with axially excavation oil cylinder by Cornu Caprae seu Ovis grapple；Axially excavation oil cylinder is installed on oil cylinder and fixes on steelframe, and oil cylinder is fixed steelframe and is fixed on outside outside framework one end, and on the high-strength armorplate glass of axially excavation oil cylinder, central authorities offer an excavation observation window identical with roadway excavation unit cross dimensions；Described axial excavation oil cylinder one end is connected with hydraulic power source by hydraulic tube with one end of Plumb load oil cylinder.
Further, between described left loading plate and left baffle plate, between right loading plate and right baffle plate, it is uniformly provided with some horizontal bracing members.
Concrete, described roadway excavation unit is the cylindrical member of a hollow, its one end is provided with the union joint of projection, the other end is provided with the spill link slot chimeric with union joint, it is provided with pin hole at upper and lower corresponding after union joint and link slot are chimeric, pin hole inserts pin, makes each roadway excavation unit head and the tail connect；It is welded with on the roadway excavation unit inwall of union joint one end and grabs bar, as the impetus with the axially Cornu Caprae seu Ovis grapple that excavation oil cylinder is connected.
Further, the cross section of described roadway excavation unit or circle, or square, or rectangle, or stalk Semicircular arched.
Concrete, described channel bar is bolted with left loading plate top and right loading plate top.
Concrete, described oil cylinder is fixed steelframe and is included upper and lower two horizontal girds and a vertical straight beam, and its upper beam is connected with channel bar bolt, and its underpart crossbeam welds with weight tray, and its vertical straight beam is fixing axially excavates oil cylinder.
Concrete, described high-strength armorplate glass is connected with the front and back ends bolt of left baffle plate and right baffle plate.
Laboratory testing rig for simulating deep tunnel excavation of the present utility model, it is achieved that the simulation of large-scale Deep Mine tunnel high pressure triaxiality geological environment, solves the problems such as conventional Roadway model assay device excavation equipment is complicated, excavation disturbance is big.
This utility model compared with prior art, has the advantages that
(1) this utility model is that Roadway model applies high pressure boundary force by high-voltage oil cylinder, oil sources and internal and external frame simple for structure, rigidity is big, and each boundary face of model all suffers restraints, it is achieved that the simulation of deep tunnel heavily stressed three-dimensional state environment.
(2) test simulates roadway excavation without special excavation drilling system, use flexible design, the segmentation roadway excavation unit spliced of compact forms simulation tunnel, coordinate and axially excavate oil cylinder, the automatic Excavation simulation of deep tunnel can be completed easily.
(3) conventional hand excavation or the impact of special roadway excavation system excavation disturbance are bigger, and this utility model is by friction-reducing measures such as roadway excavation cell surface coating lubricating oil, sticking films, control rate of excavation well, the excavation construction disturbing influence to country rock can be eliminated.
(4) through high-strength armorplate glass can clear, be visually observed that the deformation of simulation surface, tunnel rock mass, misalignment etc., overcome conventional simulation test surface of test piece change under triaxiality environment and be difficult to the shortcoming observed.
(5) roadway excavation unit is embedded in test specimen, its section configuration, size can be customized according to the difference of test requirements document, thus it is suitable for the excavation test in different section tunnel, and deep tunnel substep full face tunneling can be simulated, excavation border is compared with model test plan boundary and is met, and adds the accuracy of Roadway model test.
(6) assay device that this utility model provides is rational in infrastructure, simple to operate, test efficiency is high, observation is convenient, accuracy is high, preferably achieves that deep tunnel under high pressure triaxiality environment is automatic, simple and the low simulation disturbing excavation.
Accompanying drawing explanation
Fig. 1 is the perspective view of this utility model embodiment.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the front view of Fig. 1.
Fig. 4 is the perspective view of roadway excavation unit in Fig. 1.
Fig. 5 is the left end stereochemical structure view of Fig. 4.
Fig. 6 be roadway excavation unit section configuration of the present utility model be front view during circle.
Fig. 7 be roadway excavation unit section configuration of the present utility model be front view during square.
Fig. 8 be roadway excavation unit section configuration of the present utility model be front view during stalk Semicircular arched.
Detailed description of the invention
With embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings.
Seeing Fig. 1 to Fig. 3, the laboratory testing rig of the present embodiment, including outside framework and the set inner frame in the inner of groove type.As seen from the figure, outside framework includes left loading plate 1, the right loading plate 2 erect, and with left loading plate 1 bottom and right loading plate 2 bottom be connected horizontal bearing base plate 3, have 3 horizontal channel bars 4 by bolt 14 level connection joint between left loading plate 1 top and right loading plate 2 top.Inner frame includes that baffle plate 7 and right baffle plate 8 are propped up in the left side being fixed on weight tray 3, erectting, the front and back ends of left baffle plate 7 and right baffle plate 8 has been bolted high-strength armorplate glass 10, the load plate 6 of level it is provided with between left baffle plate 7 and the top of right baffle plate 8, load plate 6 level height, less than the height of channel bar 4, is uniformly provided with 6 Plumb load oil cylinders 5 between load plate 6 and channel bar 4；Plumb load oil cylinder 5 is high-voltage oil cylinder, and channel bar 4 bottom surface is fixed in upper end, and load plate 6 end face is fixed in lower end.Between left loading plate 1 and left baffle plate 7, between right loading plate 2 and right baffle plate 8, it is uniformly provided with the upper and lower three horizontal bracing members of row 18 respectively.Propping up by a left side that inner frame cavity that baffle plate 7, right baffle plate 8, load plate 6, high-strength armorplate glass 10 and weight tray 3 enclose is built-in is placed with test material i.e. test specimen 9, test material central authorities are preset with for the roadway excavation unit 13 that simulate tunnel, some head and the tail connect；Plumb load oil cylinder 5 can be the high terminal pressure that test specimen 9 surface provides 10～15MPa.Roadway excavation unit 13 near high-strength armorplate glass 10 side, front end is connected with axially excavation oil cylinder 11 by Cornu Caprae seu Ovis grapple 12.Axial excavation oil cylinder 11 is installed on oil cylinder and fixes on steelframe 15, as seen from the figure, oil cylinder is fixed steelframe 15 and is included upper and lower two horizontal girds and a vertical straight beam, its upper beam is bolted with channel bar 4, its underpart crossbeam welds with weight tray 3, the fixing axially excavation oil cylinder 11 of its vertical straight beam.On the high-strength armorplate glass 10 of axially excavation oil cylinder 11, central authorities offer an excavation observation window identical with roadway excavation unit 13 cross dimensions；Axially excavation oil cylinder 11 one end is connected with hydraulic power source 16 by hydraulic tube 17 with one end of Plumb load oil cylinder 5.
See Fig. 4 to Fig. 8, roadway excavation unit 13 is the cylindrical member 131 of a hollow, its right-hand member is provided with the union joint 132 of projection, its left end is provided with the spill link slot 136 chimeric with union joint 132, union joint 132 and link slot 136 chimeric after upper and lower corresponding at be provided with pin hole 135, pin hole 135 inserts pin 133, makes each roadway excavation unit 13 head and the tail connect；It is welded with on the inwall of the roadway excavation unit 13 of union joint 132 one end and grabs bar 134, as the impetus with the axially Cornu Caprae seu Ovis grapple 12 that excavation oil cylinder 11 is connected.From Fig. 6 to Fig. 8, the cross section of roadway excavation unit 13 or circle, or square, or stalk Semicircular arched etc., customization can be needed according to test.
Above-mentioned left loading plate 1, right loading plate 2, weight tray 3 all use double thickness steel plate centre to weld oblique and vertical steel band and are made.Left baffle plate 7, a right baffle plate 8 use grid type steelframe welding levels steel plate to be made.Channel bar 4 is large-scale high-strength channel-section steel, depending on the quantity length according to described test specimen.Load plate 6 uses structural alloy steel to make, and case hardness is high, and the high pressure load that Plumb load oil cylinder 5 applies is evenly transferred to test specimen 9 surface by durable wear.Axially the stroke of excavation oil cylinder 11 is more than the length of roadway excavation unit 13.Hydraulic power source 16 is large pumping station, is made up of some motor pumps, can work for Plumb load oil cylinder 5 and axial excavation oil cylinder 11 simultaneously.Test specimen 9 is according to testing program and requires to use analog material to make by certain proportioning.
Based on the above-mentioned laboratory testing rig for simulating deep tunnel excavation, the test method that this utility model provides specifically comprises the following steps that
(1) prepare layer during similar model test material according to testing program, model test material is uniformly inserted in the inner frame fixed in advance, be successively compacted.
(2) when material to be tested fills the preset height to simulation tunnel, some roadway excavation unit 13 are spliced and is placed on filling test material, and coat the antifriction materials such as lubricant on roadway excavation unit 13 surface, lay other relevant monitoring element, continue filling test material to design size line.Wherein roadway excavation unit 13 joining method is: the link slot 136 of previous roadway excavation unit 13 is inserted in the union joint 132 of next roadway excavation unit 13, and inserts pin 133 and connect.
(3) after test specimen 9 i.e. test material maintenance to design strength, start hydraulic power source 16, providing power to Plumb load oil cylinder 5, making load plate 6 gradually move down until touching test specimen 9 surface.
(4) according to border high pressure numerical value and the loading speed of plan design, the valve of regulation hydraulic power source 16, progressively carry out loading until design pressure.
(5) voltage stabilizing a period of time makes terminal pressure be sufficiently transmitted to test specimen 9 inside；Control axially excavation oil cylinder 11, make piston rod stretch out, and be suspended to Cornu Caprae seu Ovis grapple 12 grab bar 134 within the roadway excavation unit 13 near test specimen 9 surface.
(6) axially excavation oil cylinder 11 is controlled, according to a rate of advance of EXPERIMENTAL DESIGN, piston rod is made slowly to bounce back, until first paragraph roadway excavation unit 13 is drawn out completely, then this roadway excavation unit 13 is taken off, it is achieved thereby that the first step of deep tunnel is the lowest disturbs full face tunneling.
(7) according to the method for (5) (6), proceed the second step of deep tunnel, the 3rd step ... circulation excavation, until all roadway excavation unit 13 is drawn out from test specimen 9, and then complete the digging process of whole deep tunnel.
(8) operate the valve of hydraulic power source 16, lay down the pressure of each Plumb load oil cylinder 5, take off the high-strength safety glass 10 before model, the test specimen 9 after test is cleared up.
(9) compile test data, analyze the deformation of deep laneway surrounding rock, fracturing features and Evolution, determine the influence factor of deep wall rock stability.
Claims (7)
1. the laboratory testing rig being used for simulating deep tunnel excavation, it is characterised in that: it includes recessed
The outside framework of flute profile and set inner frame in the inner；Described outside framework includes the left loading plate erect, right carrying
Plate and the horizontal bearing base plate that bottom is connected therewith, level between left loading plate top and right loading plate top
Connect and have some horizontal channel bars；Described inner frame includes the left side being fixed on weight tray, erectting
Propping up baffle plate and right baffle plate, the left front and back ends propping up baffle plate and right baffle plate connects high-strength armorplate glass,
Being provided with the load plate of level between left baffle plate and the top of right baffle plate, load plate level height is less than channel-section steel
Top depth of beam, is uniformly provided with some Plumb load oil cylinders between load plate and channel bar；Described inside casing
Built on stilts intracavity has put test material, test material central authorities be preset with for simulate tunnel, some head and the tail connect
The roadway excavation unit connect；Near high-strength armorplate glass side roadway excavation unit by Cornu Caprae seu Ovis grapple with
Axially excavation oil cylinder connects；Axial excavation oil cylinder is installed on oil cylinder and fixes on steelframe, and oil cylinder is fixed steelframe and fixed
Outside outside framework one end, on the high-strength armorplate glass of axially excavation oil cylinder, central authorities offer a Ge Yu lane
The excavation observation window that road excavation unit cross dimensions is identical；Described axial excavation oil cylinder one end and Plumb load oil
One end of cylinder is connected with hydraulic power source by hydraulic tube.
The most according to claim 1 for simulating the laboratory testing rig of deep tunnel excavation, its feature
It is: described left loading plate and a left side are propped up between baffle plate, it is some to be uniformly provided with between right loading plate and right baffle plate
Laterally bracing members.
The most according to claim 1 for simulating the laboratory testing rig of deep tunnel excavation, its feature
Being: described roadway excavation unit is the cylindrical member of a hollow, its one end is provided with the union joint of projection,
The other end is provided with the upper and lower corresponding after the spill link slot chimeric with union joint, union joint and link slot are fitted together to
Place is provided with pin hole, inserts pin in pin hole, makes each roadway excavation unit head and the tail connect；Near union joint
It is welded with on the roadway excavation unit inwall of one end and grabs bar, as the Cornu Caprae seu Ovis grapple being connected with axial excavation oil cylinder
Impetus.
The most according to claim 3 for simulating the laboratory testing rig of deep tunnel excavation, its feature
It is: the cross section of described roadway excavation unit or circle, or square, or rectangle, or
Person is stalk Semicircular arched.
The most according to claim 1 for simulating the laboratory testing rig of deep tunnel excavation, its feature
It is: described channel bar is bolted with left loading plate top and right loading plate top.
The most according to claim 1 for simulating the laboratory testing rig of deep tunnel excavation, its feature
It is: described oil cylinder is fixed steelframe and included upper and lower two horizontal girds and a vertical straight beam, its upper lateral
Beam is connected with channel bar bolt, and its underpart crossbeam welds with weight tray, and its vertical straight beam is fixing axially to be opened
Dig oil cylinder.
The most according to claim 1 for simulating the laboratory testing rig of deep tunnel excavation, its feature
It is: described high-strength armorplate glass is connected with the front and back ends bolt of left baffle plate and right baffle plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620351836.0U CN205538273U (en) | 2016-04-25 | 2016-04-25 | A indoor test device for simulating deep tunnel excavation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620351836.0U CN205538273U (en) | 2016-04-25 | 2016-04-25 | A indoor test device for simulating deep tunnel excavation |
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| CN205538273U true CN205538273U (en) | 2016-08-31 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865820A (en) * | 2016-04-25 | 2016-08-17 | 湖南科技大学 | Laboratory test device for simulating deep roadway excavation and method |
| TWI582291B (en) * | 2016-12-30 | 2017-05-11 | Song-Ping Shang | Steel frame coupling structure |
| CN107764628A (en) * | 2017-11-23 | 2018-03-06 | 中南大学 | Simulate the experimental rig and test method that off-load is excavated under the three-dimensional loading environment of deep |
| CN109253929A (en) * | 2018-11-14 | 2019-01-22 | 湖南科技大学 | A kind of device of research anchor pole control plastic zone country rock Discontinuous Deformation effect |
| CN114136970A (en) * | 2021-12-02 | 2022-03-04 | 内蒙古科技大学 | Experimental method for researching back soil effect caused by rectangular pipe jacking tunneling |
-
2016
- 2016-04-25 CN CN201620351836.0U patent/CN205538273U/en not_active Withdrawn - After Issue
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865820A (en) * | 2016-04-25 | 2016-08-17 | 湖南科技大学 | Laboratory test device for simulating deep roadway excavation and method |
| CN105865820B (en) * | 2016-04-25 | 2018-07-20 | 湖南科技大学 | A kind of laboratory testing rig and method for simulating deep tunnel excavation |
| TWI582291B (en) * | 2016-12-30 | 2017-05-11 | Song-Ping Shang | Steel frame coupling structure |
| CN108266907A (en) * | 2016-12-30 | 2018-07-10 | 尚颂评 | Steel frame connector structure |
| CN108266907B (en) * | 2016-12-30 | 2020-02-07 | 尚颂评 | Steel frame connector structure |
| CN107764628A (en) * | 2017-11-23 | 2018-03-06 | 中南大学 | Simulate the experimental rig and test method that off-load is excavated under the three-dimensional loading environment of deep |
| CN109253929A (en) * | 2018-11-14 | 2019-01-22 | 湖南科技大学 | A kind of device of research anchor pole control plastic zone country rock Discontinuous Deformation effect |
| CN114136970A (en) * | 2021-12-02 | 2022-03-04 | 内蒙古科技大学 | Experimental method for researching back soil effect caused by rectangular pipe jacking tunneling |
| CN114136970B (en) * | 2021-12-02 | 2024-01-26 | 内蒙古科技大学 | Experimental method for researching back soil effect caused by rectangular pipe-jacking tunneling |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160831 Effective date of abandoning: 20180720 |